Mooring Limit of Small Fishing Boat at Kumaishi Fishing Port

Abstract

Recentiy ， port distUrbance and 皿 oo 血 g distUrbance caused by oscillation has been seen as a problem at many 卿 s and bo雌 ， and fishing pomS ， The 舳 。rs clarified the mechanism of port disturbance generation at Kumaishi fishing po鶏 based on field observa 匠on and numerical simulati ． Howeve ろ tl ｝ e limit wave height which cause moor disturbance on small fishing boats has not been clarified ． The autho 埒 have analyzed moo 血 g limit fbcusing on lo 一 period wave heig 瓧s based on past disasters exempla and the numerica1 simUlation resUltS． Conclusions below have been obtained from the analysis ． 〔 1) Moo 血 g distUfbance accompanied by the pass of low − pressu 祀 or 嫉) hoo4 which dainage ship bodies and rdquiie evacuations to other ports ， occur several times a year at Kumaishi Fishirig port ． (2) Fro皿 the hydK) graphic conditions in case ofmooimg distUrbance ， it is clar 面ed 血 at the moo 血 g disturbance occur in case where Hv3 ， which is the hing lo ・ pedod waye heig is over 2． Om and 疏 is()ver O． 10m ， ms also clarified that the 1irnit fc) r long − period wave for sma11 fish 血 g boats is O， 25m s血 ce long 「 period wave inside the port is amp 苴 fied 25 − fc) ld on 廿 1ese cases ． (3) From the frequency of long − periOd wave inrushing to Ku 皿 】 aishi fishing porち it has been clarified that hydrogrqphic condition 蠢 whose HL is over O． 10m is 5． 75％ throu 帥 ayear and it is l4． 71％ in winter ， which is the greatest value il the yea 孰 (4) The quan 飆 ive血dicat () r 『Hlrs (over 2． Qm) " has been銃〔 troduced as a deoision ildicator for evacuations ． 』 吻 mordSt Oceanogアaphicphenomen Long − per わ dwaves ， 」 ｝ d／ ooring limit ，

A Method for Estimating the Risk of Fishery Ports Against Typhoon: A Case Study on Dongsha Fishery Port

“…Additionally, the storm surge can be influenced significantly by the landfall location of a typhoon with the same pressure (Sun et al, 2015). Abeshima et al (2017) clarified the mechanism of port disturbance generation at the Kumaishi fishery port and concluded that the quantitative indicator H 1/3 (over 2.0 m) can be introduced as a decision indicator for evacuations by observational statistics. Some exploratory work has been conducted in China on fishery ports' resistance to damage caused by typhoons.…”

Evaluation of the resilience of fishery ports to typhoons: a case study on Dongsha fishery port

“…Additionally, the storm surge can be influenced significantly by the landfall location of a typhoon with the same pressure (Sun et al, 2015). Abeshima et al (2017) clarified the mechanism of port disturbance generation at the Kumaishi fishery port and concluded that the quantitative indicator H1/3 (over 2.0 m) can be introduced as a decision indicator for evacuations by observational statistics. Some exploratory work has been conducted in China on fishery ports' resistance to damage caused by typhoons.…”